题目

如图4所示的电路中,闭合开关,电压表V1的示数为6V,电压表V2的示数为3.4V,那么电灯L1两端电压为() A . 6V B . 3.4V C . 2.6V D . 9.4V 答案:CThe girl is often heard _________ the piano in her room.A.playB.playingC.playsD.to play
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